1. Research and publishing trends in cattle reproduction in the tropics: Part I. A global analysis;Galina;Anim. Breed. Abstr.,1987
2. Evaluation following short-and long-term storage of frozen semen from Zebu cattle;Barwise,1984
3. Investigation into the properties of bovine semen;Rhodes;World Rev. Anim. Prod.,1985
4. Modificaciones al sistema de clasificación climática de Koppen;García,1988
5. Breeding soundness evaluation in bulls;Chenoweth,1980